wasm-emscripten-finalize: Internalize mutable __stack_pointer import (#2213)

I'm working on a change to lld that will cause `-pie` binaries to
import __stack_pointer, just like -shared do already.  Because we
don't yet support mutable globals everywhere this change will
internalize the import and create a new immutable import that is used
to initialize the internal one.

This change is part of the fix for:
https://github.com/emscripten-core/emscripten/issues/8915

1 files changed, 4 insertions, 0 deletions

diff --git a/src/wasm-emscripten.h b/src/wasm-emscripten.h
index 1f9b22926..0841708f2 100644
--- a/src/wasm-emscripten.h
+++ b/src/wasm-emscripten.h
@@ -44,6 +44,10 @@ public:
   // and restore functions.
   void replaceStackPointerGlobal();
 
+  // Remove the import of a mutable __stack_pointer and instead initialize the
+  // stack pointer from an immutable import.
+  void internalizeStackPointerGlobal();
+
   std::string
   generateEmscriptenMetadata(Address staticBump,
                              std::vector<Name> const& initializerFunctions);